Demetrius I Poliorcetes

Demetrius I of Macedon (337-283 BC), formerly known as Demetrius Poliorcetes ("the Besieger", Δημήτριο τον Πολιορκητή), was the second king of the Antigonid Empire, reigning from 294 BC until his death in Seleukos' captivity in 283 BC. However, he was the winner of the war, as his son Antigonus Gonatus of Macedon became the King after Ptolemy I of Egypt contented in Egypt and Seleukos was assassinated in 281 BC.

Biography
Demetrius Poliorcetes was the son of Antigonus One-Eye, and experienced his first battle in the Battle of Gaza in 312 BC. In 310 BC, he failed to take Babylon from the Seleucid Empire, but he took Munychia from Cassander in 307 BC. He also defeated Menelaus of Cyprus (Ptolemy I of Egypt's brother) at the Battle of Salamis in 306 BC and conquered Cyprus itself, but failed to capture Rhodes due to Ptolemy's intervention in 305 BC. After the Battle of Ipsus in 301, he became King, but failed to take Athens in 287 BC, and was captured by Seleukos a year later. He died after three years of captivity, but his son Antigonus Gonatus of Macedon took over Macedon after Seleukos and Lysimachus' deaths.